19122697879740 has 576 divisors, whose sum is σ = 75336573312000. Its totient is φ = 3940843705344.

The previous prime is 19122697879739. The next prime is 19122697879759. The reversal of 19122697879740 is 4797879622191.

19122697879740 is a `hidden beast` number, since 191 + 2 + 269 + 78 + 79 + 7 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 27121186 + ... + 27817334.

It is an arithmetic number, because the mean of its divisors is an integer number (130792662000).

Almost surely, 2^{19122697879740} is an apocalyptic number.

19122697879740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19122697879740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37668286656000).

19122697879740 is an abundant number, since it is smaller than the sum of its proper divisors (56213875432260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19122697879740 is a wasteful number, since it uses less digits than its factorization.

19122697879740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696243 (or 696222 counting only the distinct ones).

The product of its (nonzero) digits is 192036096, while the sum is 72.

The spelling of 19122697879740 in words is "nineteen trillion, one hundred twenty-two billion, six hundred ninety-seven million, eight hundred seventy-nine thousand, seven hundred forty".